Harvey Matthew, Murray Andrew James
School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
Phys Rev Lett. 2008 Oct 24;101(17):173201. doi: 10.1103/PhysRevLett.101.173201. Epub 2008 Oct 22.
A novel atom trap is described using alternating current to generate the magnetic B field, together with high speed polarization switching of the damping laser field. This combination produces a trap as effective as a standard magneto-optical trap (MOT), with the advantage that the average B field is zero. No net current is hence induced in surrounding conductive elements, and the B field produced by the ac MOT is found to switch off >300 times faster than a conventional MOT. New experiments can hence be performed, including charged particle probing or detection of the cold target ensemble.
本文描述了一种新型原子阱，它利用交流电产生磁场B，并对阻尼激光场进行高速偏振切换。这种组合产生的阱与标准磁光阱（MOT）一样有效，其优点是平均磁场B为零。因此，周围的导电元件不会感应出净电流，并且发现交流磁光阱产生的磁场B关闭速度比传统磁光阱快300倍以上。因此，可以进行新的实验，包括带电粒子探测或冷靶系综的检测。
